Ventilated acoustical cover

ABSTRACT

A cover structure for apparatuses that generate noise, such as vibrators, with the cover consisting of an open bottom, foursided, metallic structure having a deflected air flow discharge chute along an elevated edge formed in part by a removable top and side wall member, with the cover being fully insulated against noise and providing adjustable leg members for attachment to various supports.

FIPSilG United States Patent 1 1 Urban Dec. 30, 1975 VENTILATEDACOUSTICAL COVER 3,799,703 3/1974 Paine et al. 181/33 K X 75 In t R d W.vein or aymon Urban, Ch1cago, lll Primary Examiner L. T. Hlx [73]Assignee: Transco Inc., Chicago, Ill. Assistant Examiner-John F.Gonzales [22] Filed. Mar 17 1975 Attorney, Agent, or Firm-Edward C.Threedy 21 Appl. No.: 559,327 57 ABSTRACT A cover structure forapparatuses that generate noise, [52] US. Cl. 181/198; l8l/33 K such asvibrators, with the cover consisting of an p 51 Int. c1. A47B 81/06bottom, f metallic structure having a [58] Field of Search 181/ 198, 33K flcctcd air fl discharge chute along an elevated edge formed in partby a removable top and side wall [56] References Cit d member, with thecover being fully insulated against UNITED STATES PATENTS noise andproviding adjustable leg members for at- 2,701,618 2/1955 Montgomery181/33 K UX tachmem to Supports 3,789,954 2/1974 Raleigh 181/33 K 8Claims, 4 Drawing Figures U.S. Patent Dec. 30, 1975 5 V E 4 u 1 wVENTILATED ACOUSTI CAL COVER SUMMARY OF THE INVENTION A ventilatedacoustical cover for a noise-generating device, such as a vibrator. Thecover consists of an outer metallic, three-sided shell, the inner wallsurfaces of which support a noise-suppressing insulating mat, such asthat disclosed in U.S. Pat. No. 3,879,910 (Ser. No. 286,897). A top andside wall member is removably mounted on the shell to form a complete,openbottom housing.

One side wall of the shell, as well as one top edge of the wall,provides a deflected air chute therein, to deflect air through thehousing and about the noisegenerating apparatus contained therein.

The cover is equipped with supporting legs having vertically adjustableconnection so that the open bottom of the cover may be positionedrelative to a supporting structure and thereby permitting the properamount of air flow through the cover without distracting from itsnoise-suppressing function.

GENERAL DESCRIPTION The invention will be best understood by referenceto the accompanying drawings showing the preferred form of construction,and in which:

FIG. 1 is a perspective view of the cover with the removable sectionseparated therefrom;

FIG. 2 is a side elevational view of the cover showing a fragmentaryportion in detail;

FIG. 3 is a detailed sectional view taken on line 33 of FIG. 2; and

FIG. 4 is an enlarged fragmentary sectional view of one supporting legand its mounting to the cover.

The object of this invention is to provide aventilated acoustical coverfor noise-generating apparatuses. As an example, electrostaticprecipitators are designed to collect particles on a series ofelectrostatic precipitating plates, and as these particles adhere to theplates, they collect and build up and require periodic removal. To clearsuch particles from the plates, the plates are vibrated by eitherelectrical or mechanical means, generating a considerable amount ofnoise which is objectionable. The purpose of this cover is to deadensuch generated noise and protect the environment from noise pollution.The precipitators also generally operate at elevated temperatures, andtherefore there is a heat dissipation problem. This problem is overcomeby the cover of the invention, which is shown as providing an openbottom and a vented top, allowing a predetermined amount of air to flowthrough the cover to maintain a workable temperature in the vibratorarea. As most of these devices are external of a building, it isrequired that the cover be provided with supporting legs which arereadily adaptable to varying slopes and uneven configurations.

The cover of this invention consists of a three-sided shell composed ofan end wall 11 and two spaced parallelly disposed side walls 12 and 13.The top edge portion 14 of the end wall 11 is separated from theadjacent upstanding edge portions 15 and 16 of the side walls 12 and 13and folded along the line 17 inwardly of the shell 10, as seen in FIG.3, for a purpose hereinafter described.

The cover includes a removable section 18 which consists of a top wall19 and an end wall 20. The opposite side edges of the top wall 19 areformed to provide sheet metal joints 21 and 22 that are adapted toreceive the upstanding edge portions Hand 16 of the side walls 12 and13, when the top wall 19 is placed upon the shell 10, as seen in FIG. 2.The opposite side edges of the end wall 20 are likewise formed toprovide sheet metal joints 23 for the reception of the elongated edges24 of the side walls 12 and 13 of the shell 10.

All of the sheet metal joints 2], 22 and 23 of the top wall 19 and endwall 20, as well as the edges 15, 16 and 24 of the side walls 12 and 13,are provided with aligned apertures 25 through which suitable connectors26, in the form of wing nuts and bolts, project for removably connectingthe section 18 to the shell 10.

The top wall 19 of section 18 provides an angular lip 27, which projectsdownwardly therefrom and beyond the plane of the end wall 11, as seen inFIG. 3.

Connected to the underside of the lip 27 below the bent line 28, betweenthe lip 27 and the top wall 19, is a channel-forming member 29. Thismember 29 extends in a plane parallel to the inwardly bent edge portion19 of the end wall 11 of the shell 10 and is spaced therefrom so as toform therebetween an air chute 30. The inner wall surfaces of the endwall 11 and side walls 12 and 13 of the shell 10, as well as the innerwall surfaces of the top wall 19 and end wall 20 of the removablesection 18 each support a batt of noisedeadening insulation 31. 7

As viewed in FIG. 4, the batt 31 consists of an outer aluminum sheet 32,two layers 33 and 34 of fibrous material, such as mineral wool,separated by a lead foil sheet 35. The exposed face of the butt 31provides a second noise-deadening lead foil sheet 36 held together by awire mesh 37.

As more clearly shown in FIG. 4, the end wall 11 and side walls 12 and13 of the shell 10 provide adjacent the bottom edges thereof an interiorU-shaped bracket 38, one arm of which is fastened to the inner wallfaces of such walls by means of welding or the like, with the bightportion 39 of the bracket forming a lower base support for the batt 31,and the opposite arm 40 embracing the inner lower edge portion of thebatt 31 so as to secure the same within the shell 10.

This insulating noise-deadening batt 31 is of the type shown anddescribed in US. Pat. No. 3,879,910 (Ser. No. 286,897) and, as such,makes up no part of the present invention except for its functional usewith the structure hereinbefore described.

Adjacent to the bottom edge of each of the side walls 12 and 13,-thereis a reinforcing metallic plate 41 which provides laterally projectingthreaded studs 42. These studs 42 are adapted to project through slots43 formed in the upstanding leg portion 44 of generally L-shaped legmembers 45. The leg members 45 provide a laterally extending baseportion 46 which is adapted to have facial confrontation with anysuitable supporting structure.

By this arrangement, the cover may be positioned in a raised relationwith respect to a support structure a distance equal to the length ofthe slots 43 formed in the leg members 45. Adapted to be threaded uponthe studs 42 are suitable bolts 47, which, when tightened upon the studs42, will hold the cover in its desired elevated position.

By providing for a readily removable section 18, the apparatus which isto be contained within the ventilated acoustical cover may be readilyserviced and the cover easily and quickly returned to its functionalstate.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departingfrom' the spirit of theinvention. 1, therefore, do not wish to be limited-to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent is:

l. A ventilated acoustical cover for a noise-generating apparatuscomprising a. a metallic three-sided shell,

b. a removable section providing a top and end wall cooperating withsaid shell to form an open bottom cover,

0. means for removably connecting said section to said shell,

d. means within said cover for acoustically and thermally insulating thesame,

e. means provided by said top wall of said section and one wall of saidshell cooperating to provide an air chute having open communication withthe interior of said cover,

f. and means for supporting said cover with its open I bottom in araised position whereby an air flow therethrough and out of said chuteis maintained.

2. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 1 and further including means provided by said shelland said one end wall of said section for supporting said acoustical andthermal insulating means within said cover.

3. A ventilated acoustical cover for a noise-generating apparatus asdefined by 7 claim 1, wherein said means for removably connecting saidsection to said shell comprises channel members provided by oppositeside edges of said top and end wall of said section for receiving thecorresponding edges of certain sides of said shell for removablyconnecting said section to said shell.

4. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 3, wherein there is included means provided by saidshell and said one wall of said section for supporting said acousticaland thermal insulating means within said cover.

5. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 1, wherein said means for supporting said covercomprises leg members providing vertically extending slots therein andconnectors carried by certain walls of said shell disposed in said slotsso that said cover may be supported thereby in various elevations.

6. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 5 and further including means provided by said shelland said one end wall of said section for supporting said acoustical andthermal insulating means within said cover.

7. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 5, wherein said means for removably connecting saidsection to said shell comprises channel members provided by oppositeside edges of said top and end wall of said section for receiving thecorresponding edges of certain sides of said shell for removablyconnecting said section to said shell.

8. A ventilated acoustical cover for a noise-generating apparatus asdefined by claim 4, wherein said means for supporting said covercomprises leg members providing vertically extending slots therein andconnectors carried by certain walls of said shell disposed in said slotsso that said cover may be supported thereby in various elevations.

1. A ventilated acoustical cover for a noise-generating apparatuscomprising a. a metallic three-sided shell, b. a removable sectionproviding a top and end wall cooperating with said shell to form an openbottom cover, c. means for removably connecting said section to saidshell, d. means within said cover for acoustically and thermallyinsulating the same, e. means provided by said top wall of said sectionand one wall of said shell cooperating to provide an air chute havingopen communication with the interior of said cover, f. and means forsupporting said cover with its open bottom in a raised position wherebyan air flow therethrough and out of said chute is maintained.
 2. Aventilated acoustical cover for a noise-generating apparatus as definedby claim 1 and further including means provided by said shell and saidone end wall of said section for supporting said acoustical and thermalinsulating means within said cover.
 3. A ventilated acoustical cover fora noise-generating apparatus as defined by claim 1, wherein said meansfor removably connecting said section to said shell comprises channelmembers provided by opposite side edges of said top and end wall of saidsection for receiving the corresponding edges of certain sides of saidshell for removably connecting said section to said shell.
 4. Aventilated acoustical cover for a noise-generating apparatus as definedby claim 3, wherein there is included means provided by said shell andsaid one wall of said section for supporting said acoustical and thermalinsulating means within said cover.
 5. A ventilated acoustical cover fora noise-generating apparatus as defined by claim 1, wherein said meansfor supporting said cover comprises leg members providing verticallyextending slots therein and connectors carried by certain walls of saidshell disposed in said slots so that said cover may be supported therebyin various elevations.
 6. A ventilated acoustical cover for anoise-generating apparatus as defined by claim 5 and further includingmeans provided by said shell and said one end wall of said section forsupporting said acoustical and thermal insulating means within saidcover.
 7. A ventilated acoustical cover for a noise-generating apparatusas defined by claim 5, wherein said means for removably connecting saidsection to said shell comprises channel members provided by oppositeside edges of said top and end wall of said section for receiving thecorresponding edges of certain sides of said shell for removablyconnecting said section to said shell.
 8. A ventilated acoustical coverfor a noise-generating apparatus as defined by claim 4, wherein saidmeans for supporting said cover comprises leg members providingvertically extending slots therein and connectors carried by certainwalls of said shell disposed in said slots so that said cover may besupported thereby in various elevations.